Unit 3 Part 2 Review

Find the mean of these numbers: 12, 84, 56, 54

• 206

• 4

• 51.5

• 0

Find the M.A.D. for this set of data: 125, 160, 235, 325, 540

USE YOUR CHART

• 260

• 5

• 277

• 124.4

Ally, Josh, and Chloe all took random samples of students at their high school and asked them how many books they read each year. After collecting the data, they each calculated the mean for their sample. The results are:

Ally: 8

Josh: 9

Chloe: 5

What is the mean of all of these samples?

• 7.3

• 8

• 9

• 5

To find the mean, add up the numbers and ________________ .

Jamie practiced for her piano recital for 5 days. What is the sum of the hours that she practiced on Days 4 and 5?

• 20

• 12

• 8

• 100

The movie theater has 250 seats. 225 seats were filled. What percent of seats were filled?

• 10

• 90

• 50

• 100

Pete conducted a survey of his friends about their favorite type of music. Based on the graph, which statement is true?

• Girls like country music more than boys like rap music.

• Boys like country music more than girls do.

• Girls like rap music more than boys do.

• Boys like rock music more than girls like rap music.

Valerie answer 28 problems on her test correctly. If there were 35 questions, what percent did Valerie get on her test?

Round to the nearest whole number

• 80

• 85

• 58

• 100

Mary bought 2 books for $6.44. How much would it cost Mary to buy 10 books?

• $3.22

• $6.44

• $12.88

• $32.20

Max runs 5 miles in 30 minutes. How long does it take him to run 1 mile?

• 6 minutes

• 2 minutes

• 6 hours

• 20 minutes